<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>参考链接：https://juejin.cn/post/6844903938932621325#comment</title>
</head>
<link rel="stylesheet/less" href="./index.less" />
<style>
    body {
        background-color: #222;
    }
</style>

<body>
    <div>
        <div id="start1"></div>
        <div id="start2"></div>
        <div id="start3"></div>
    </div>
</body>
<script src="../../less.1.7.3.js"></script>

</html>